Uber India — not getting the promotion amount

Address:	Hyderabad, Andhra Pradesh, 500032
Website:	uber

I applied a promocode o[censored]bx50off which gives 50% off for 3 trips my promotion.
I took a trip of value: rs105.10, rs521.16 and rs.163.71 (Screen shots attached for all three trips)
The promo code didn't apply to any of my trip.
I complained in uber also but the repeatedly sent me automated message about how to apply promo code.
I sent screen shot also saying that the code was already applied but they didn't take any action.